Analysis of human ejaculation using color Doppler ultrasonography: A comparison between antegrade and retrograde ejaculation

Atsushi Nagai, Masami Watanabe, Yasutomo Nasu, Hiroki Iguchi, Norihiro Kusumi, Hiromi Kumon

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Objectives. To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. Methods. Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation. Results. In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder. Conclusions. Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders.

Original languageEnglish
Pages (from-to)365-368
Number of pages4
JournalUrology
Volume65
Issue number2
DOIs
Publication statusPublished - Feb 2005

Fingerprint

Doppler Color Ultrasonography
Ejaculation
Urethra
Seminal Vesicles
Semen
Urinary Bladder
Ejaculatory Ducts

ASJC Scopus subject areas

  • Urology

Cite this

Analysis of human ejaculation using color Doppler ultrasonography : A comparison between antegrade and retrograde ejaculation. / Nagai, Atsushi; Watanabe, Masami; Nasu, Yasutomo; Iguchi, Hiroki; Kusumi, Norihiro; Kumon, Hiromi.

In: Urology, Vol. 65, No. 2, 02.2005, p. 365-368.

Research output: Contribution to journalArticle

Nagai, Atsushi ; Watanabe, Masami ; Nasu, Yasutomo ; Iguchi, Hiroki ; Kusumi, Norihiro ; Kumon, Hiromi. / Analysis of human ejaculation using color Doppler ultrasonography : A comparison between antegrade and retrograde ejaculation. In: Urology. 2005 ; Vol. 65, No. 2. pp. 365-368.
@article{58379620397a49eb8ae904223516459f,
title = "Analysis of human ejaculation using color Doppler ultrasonography: A comparison between antegrade and retrograde ejaculation",
abstract = "Objectives. To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. Methods. Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation. Results. In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder. Conclusions. Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders.",
author = "Atsushi Nagai and Masami Watanabe and Yasutomo Nasu and Hiroki Iguchi and Norihiro Kusumi and Hiromi Kumon",
year = "2005",
month = "2",
doi = "10.1016/j.urology.2004.09.016",
language = "English",
volume = "65",
pages = "365--368",
journal = "Urology",
issn = "0090-4295",
publisher = "Elsevier Inc.",
number = "2",

}

TY - JOUR

T1 - Analysis of human ejaculation using color Doppler ultrasonography

T2 - A comparison between antegrade and retrograde ejaculation

AU - Nagai, Atsushi

AU - Watanabe, Masami

AU - Nasu, Yasutomo

AU - Iguchi, Hiroki

AU - Kusumi, Norihiro

AU - Kumon, Hiromi

PY - 2005/2

Y1 - 2005/2

N2 - Objectives. To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. Methods. Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation. Results. In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder. Conclusions. Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders.

AB - Objectives. To observe the phenomenon of human ejaculation dynamically using color Doppler ultrasonography. Methods. Human ejaculation was observed using transrectal color Doppler ultrasonography in a healthy man and a patient with retrograde ejaculation. Ejaculation was induced manually with audiovisual sexual stimulation. The ejaculatory phenomenon was analyzed and compared with that of retrograde ejaculation. Results. In the healthy man, the prostatic urethra flattened slightly and the bladder neck contracted just before expulsion. The ejaculatory stream spurted from the seminal vesicles to the bulbous urethra through the ejaculatory duct. In the patient with retrograde ejaculation, the ejaculatory stream from the seminal vesicles and inframontanal and distal prostatic urethras distended into a globular-shaped sac filled with semen. No seminal flow toward the bulbous urethra occurred. The semen remaining in the prostatic urethra began flowing slowly into the bladder. Conclusions. Differences between antegrade and retrograde ejaculation can be clearly detected by color Doppler ultrasonography, providing a noninvasive method to diagnose ejaculatory disorders.

UR - http://www.scopus.com/inward/record.url?scp=13844294360&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=13844294360&partnerID=8YFLogxK

U2 - 10.1016/j.urology.2004.09.016

DO - 10.1016/j.urology.2004.09.016

M3 - Article

C2 - 15708054

AN - SCOPUS:13844294360

VL - 65

SP - 365

EP - 368

JO - Urology

JF - Urology

SN - 0090-4295

IS - 2

ER -